HEADER LYASE 13-OCT-04 1XQP TITLE CRYSTAL STRUCTURE OF 8-OXOGUANOSINE COMPLEXED PA-AGOG, 8-OXOGUANINE TITLE 2 DNA GLYCOSYLASE FROM PYROBACULUM AEROPHILUM COMPND MOL_ID: 1; COMPND 2 MOLECULE: 8-OXOGUANINE DNA GLYCOSYLASE; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: PYROBACULUM AEROPHILUM; SOURCE 3 ORGANISM_TAXID: 13773; SOURCE 4 GENE: PA-AGOG; SOURCE 5 EXPRESSION_SYSTEM: ESCHERICHIA COLI; SOURCE 6 EXPRESSION_SYSTEM_TAXID: 562; SOURCE 7 EXPRESSION_SYSTEM_STRAIN: B834(DE3); SOURCE 8 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID; SOURCE 9 EXPRESSION_SYSTEM_PLASMID: PET28C(+) KEYWDS HELIX-HAIRPIN-HELIX, 8-OXOGUANINE DNA GLYCOSYLASE, ARCHAEA, KEYWDS 2 P.AEROPHILUM, PA-AGOG-8-OXOGUANOSINE COMPLEX, DNA REPAIR, LYASE EXPDTA X-RAY DIFFRACTION AUTHOR G.M.LINGARAJU,A.A.SARTORI,D.KOSTREWA,A.E.PROTA,J.JIRICNY,F.K.WINKLER REVDAT 5 11-OCT-17 1XQP 1 REMARK REVDAT 4 16-APR-14 1XQP 1 REMARK VERSN REVDAT 3 24-FEB-09 1XQP 1 VERSN REVDAT 2 01-MAR-05 1XQP 1 JRNL REVDAT 1 16-NOV-04 1XQP 0 JRNL AUTH G.M.LINGARAJU,A.A.SARTORI,D.KOSTREWA,A.E.PROTA,J.JIRICNY, JRNL AUTH 2 F.K.WINKLER JRNL TITL A DNA GLYCOSYLASE FROM PYROBACULUM AEROPHILUM WITH AN JRNL TITL 2 8-OXOGUANINE BINDING MODE AND A NONCANONICAL JRNL TITL 3 HELIX-HAIRPIN-HELIX STRUCTURE JRNL REF STRUCTURE V. 13 87 2005 JRNL REFN ISSN 0969-2126 JRNL PMID 15642264 JRNL DOI 10.1016/J.STR.2004.10.011 REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH A.A.SARTORI,G.M.LINGARAJU,P.HUNZIKER,F.K.WINKLER,J.JIRICNY REMARK 1 TITL A NOVEL HIGHLY THERMOSTABLE 8-OXOGUANINE DNA GLYCOSYLASE REMARK 1 TITL 2 FROM PYROBACULUM AEROPHILUM REMARK 1 REF TO BE PUBLISHED REMARK 1 REFN REMARK 2 REMARK 2 RESOLUTION. 1.69 ANGSTROMS. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.1.9999 REMARK 3 AUTHORS : MURSHUDOV,VAGIN,DODSON REMARK 3 REMARK 3 REFINEMENT TARGET : ENGH & HUBER REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 1.69 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 40.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : 0.000 REMARK 3 COMPLETENESS FOR RANGE (%) : 96.7 REMARK 3 NUMBER OF REFLECTIONS : 27180 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : 0.185 REMARK 3 R VALUE (WORKING SET) : 0.183 REMARK 3 FREE R VALUE : 0.225 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.100 REMARK 3 FREE R VALUE TEST SET COUNT : 1452 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 1.69 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 1.73 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1830 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.3040 REMARK 3 BIN FREE R VALUE SET COUNT : 104 REMARK 3 BIN FREE R VALUE : 0.3880 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 2049 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 40 REMARK 3 SOLVENT ATOMS : 227 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : 32.60 REMARK 3 MEAN B VALUE (OVERALL, A**2) : 28.83 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : -0.16000 REMARK 3 B22 (A**2) : -0.40000 REMARK 3 B33 (A**2) : 0.56000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.115 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.114 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.084 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 4.829 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.966 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.942 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 2153 ; 0.016 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): 2037 ; 0.001 ; 0.020 REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 2925 ; 1.609 ; 1.987 REMARK 3 BOND ANGLES OTHERS (DEGREES): 4706 ; 1.428 ; 3.000 REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 252 ; 5.036 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 97 ;29.615 ;21.856 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 378 ;13.171 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 25 ;14.831 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 323 ; 0.156 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2324 ; 0.006 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): 464 ; 0.001 ; 0.020 REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 409 ; 0.208 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): 1813 ; 0.175 ; 0.200 REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION OTHERS (A): 1051 ; 0.083 ; 0.200 REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 117 ; 0.153 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 17 ; 0.135 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): 49 ; 0.280 ; 0.200 REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 6 ; 0.127 ; 0.200 REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 1643 ; 1.010 ; 1.500 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): 511 ; 0.204 ; 1.500 REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 2040 ; 1.128 ; 2.000 REMARK 3 MAIN-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 1098 ; 1.937 ; 3.000 REMARK 3 SIDE-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 885 ; 2.738 ; 4.500 REMARK 3 SIDE-CHAIN ANGLE OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B REFINED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 LONG RANGE B OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE RIDING REMARK 3 POSITIONS REMARK 4 REMARK 4 1XQP COMPLIES WITH FORMAT V. 3.30, 13-JUL-11 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 19-OCT-04. REMARK 100 THE DEPOSITION ID IS D_1000030655. REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 14-NOV-03 REMARK 200 TEMPERATURE (KELVIN) : 100 REMARK 200 PH : 7.5 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : N REMARK 200 RADIATION SOURCE : ROTATING ANODE REMARK 200 BEAMLINE : NULL REMARK 200 X-RAY GENERATOR MODEL : ENRAF-NONIUS FR591 REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.5418 REMARK 200 MONOCHROMATOR : OSMIC MIRROS REMARK 200 OPTICS : OSMIC MIRRORS REMARK 200 REMARK 200 DETECTOR TYPE : IMAGE PLATE REMARK 200 DETECTOR MANUFACTURER : MAR SCANNER 345 MM PLATE REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MAR REMARK 200 DATA SCALING SOFTWARE : XDS REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 28623 REMARK 200 RESOLUTION RANGE HIGH (A) : 1.690 REMARK 200 RESOLUTION RANGE LOW (A) : 57.740 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : -3.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 96.7 REMARK 200 DATA REDUNDANCY : 6.800 REMARK 200 R MERGE (I) : 0.06200 REMARK 200 R SYM (I) : 0.05400 REMARK 200 FOR THE DATA SET : 17.0000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 1.69 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 1.80 REMARK 200 COMPLETENESS FOR SHELL (%) : 90.5 REMARK 200 DATA REDUNDANCY IN SHELL : 6.12 REMARK 200 R MERGE FOR SHELL (I) : NULL REMARK 200 R SYM FOR SHELL (I) : 0.57800 REMARK 200 FOR SHELL : 3.470 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: FOURIER SYNTHESIS REMARK 200 SOFTWARE USED: PHASES REMARK 200 STARTING MODEL: NULL REMARK 200 REMARK 200 REMARK: NULL REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 43.00 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.20 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: PEG 4000, HEPES-NAOH, NACL, DITHIO REMARK 280 THREITOL, DIMETHYL SULFOXIDE, PH 7.5, VAPOR DIFFUSION, SITTING REMARK 280 DROP, TEMPERATURE 295K REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z REMARK 290 3555 -X+1/2,Y+1/2,-Z REMARK 290 4555 X+1/2,-Y+1/2,-Z REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 36.11000 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 49.05500 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 36.11000 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 49.05500 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL REMARK 300 REMARK 300 BIOMOLECULE: 1 REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON REMARK 300 BURIED SURFACE AREA. REMARK 300 REMARK: THE BIOLOGICALLY ACTIVE UNIT IS A MONOMER. REMARK 350 REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS REMARK 350 GIVEN BELOW. BOTH NON-CRYSTALLOGRAPHIC AND REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN. REMARK 350 REMARK 350 BIOMOLECULE: 1 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: MONOMERIC REMARK 350 APPLY THE FOLLOWING TO CHAINS: A REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000 REMARK 375 REMARK 375 SPECIAL POSITION REMARK 375 THE FOLLOWING ATOMS ARE FOUND TO BE WITHIN 0.15 ANGSTROMS REMARK 375 OF A SYMMETRY RELATED ATOM AND ARE ASSUMED TO BE ON SPECIAL REMARK 375 POSITIONS. REMARK 375 REMARK 375 ATOM RES CSSEQI REMARK 375 C5 8HG A 258 LIES ON A SPECIAL POSITION. REMARK 465 REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 MET A 1 REMARK 465 ALA A 2 REMARK 465 SER A 255 REMARK 465 GLU A 256 REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS IN SAME ASYMMETRIC UNIT REMARK 500 REMARK 500 THE FOLLOWING ATOMS ARE IN CLOSE CONTACT. REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI DISTANCE REMARK 500 O GLY A 249 O HOH A 476 1.97 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: COVALENT BOND ANGLES REMARK 500 REMARK 500 THE STEREOCHEMICAL PARAMETERS OF THE FOLLOWING RESIDUES REMARK 500 HAVE VALUES WHICH DEVIATE FROM EXPECTED VALUES BY MORE REMARK 500 THAN 6*RMSD (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 500 IDENTIFIER; SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT: (10X,I3,1X,A3,1X,A1,I4,A1,3(1X,A4,2X),12X,F5.1) REMARK 500 REMARK 500 EXPECTED VALUES PROTEIN: ENGH AND HUBER, 1999 REMARK 500 EXPECTED VALUES NUCLEIC ACID: CLOWNEY ET AL 1996 REMARK 500 REMARK 500 M RES CSSEQI ATM1 ATM2 ATM3 REMARK 500 LEU A 17 CB - CG - CD1 ANGL. DEV. = 11.8 DEGREES REMARK 500 ASP A 29 CB - CG - OD1 ANGL. DEV. = 5.6 DEGREES REMARK 500 ASP A 83 CB - CG - OD2 ANGL. DEV. = 7.3 DEGREES REMARK 500 GLY A 249 N - CA - C ANGL. DEV. = 17.4 DEGREES REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: TORSION ANGLES REMARK 500 REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS: REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2) REMARK 500 REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI- REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400 REMARK 500 REMARK 500 M RES CSSEQI PSI PHI REMARK 500 ARG A 195 45.03 -86.18 REMARK 500 REMARK 500 REMARK: NULL REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE 8HG A 257 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE 8HG A 258 REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 1XQO RELATED DB: PDB REMARK 900 UNCOMPLEXED NATIVE FORM OF THE SAME PROTEIN DBREF 1XQP A 1 256 UNP Q8ZVK6 Q8ZVK6_PYRAE 1 256 SEQRES 1 A 256 MET ALA ALA GLU SER GLN LEU LYS ARG VAL ILE GLU THR SEQRES 2 A 256 LEU ARG ARG LEU GLY ILE GLU GLU VAL LEU LYS LEU GLU SEQRES 3 A 256 ARG ARG ASP PRO GLN TYR ARG ALA VAL CYS ASN VAL VAL SEQRES 4 A 256 LYS ARG HIS GLY GLU THR VAL GLY SER ARG LEU ALA MET SEQRES 5 A 256 LEU ASN ALA LEU ILE SER TYR ARG LEU THR GLY LYS GLY SEQRES 6 A 256 GLU GLU HIS TRP GLU TYR PHE GLY LYS TYR PHE SER GLN SEQRES 7 A 256 LEU GLU VAL ILE ASP LEU CYS ARG ASP PHE LEU LYS TYR SEQRES 8 A 256 ILE GLU THR SER PRO PHE LEU LYS ILE GLY VAL GLU ALA SEQRES 9 A 256 ARG LYS LYS ARG ALA LEU LYS ALA CYS ASP TYR VAL PRO SEQRES 10 A 256 ASN LEU GLU ASP LEU GLY LEU THR LEU ARG GLN LEU SER SEQRES 11 A 256 HIS ILE VAL GLY ALA ARG ARG GLU GLN LYS THR LEU VAL SEQRES 12 A 256 PHE THR ILE LYS ILE LEU ASN TYR ALA TYR MET CYS SER SEQRES 13 A 256 ARG GLY VAL ASN ARG VAL LEU PRO PHE ASP ILE PRO ILE SEQRES 14 A 256 PRO VAL ASP TYR ARG VAL ALA ARG LEU THR TRP CYS ALA SEQRES 15 A 256 GLY LEU ILE ASP PHE PRO PRO GLU GLU ALA LEU ARG ARG SEQRES 16 A 256 TYR GLU ALA VAL GLN LYS ILE TRP ASP ALA VAL ALA ARG SEQRES 17 A 256 GLU THR GLY ILE PRO PRO LEU HIS LEU ASP THR LEU LEU SEQRES 18 A 256 TRP LEU ALA GLY ARG ALA VAL LEU TYR GLY GLU ASN LEU SEQRES 19 A 256 HIS GLY VAL PRO LYS GLU VAL ILE ALA LEU PHE GLN TRP SEQRES 20 A 256 ARG GLY GLY CYS ARG PRO PRO SER GLU HET 8HG A 257 20 HET 8HG A 258 20 HETNAM 8HG 2'-DEOXY-8-OXOGUANOSINE FORMUL 2 8HG 2(C10 H13 N5 O5) FORMUL 4 HOH *227(H2 O) HELIX 1 1 ALA A 3 ARG A 15 1 13 HELIX 2 2 GLY A 18 ARG A 27 1 10 HELIX 3 3 ASP A 29 GLY A 43 1 15 HELIX 4 4 GLY A 43 ILE A 57 1 15 HELIX 5 5 LYS A 64 GLN A 78 1 15 HELIX 6 6 ASP A 83 SER A 95 1 13 HELIX 7 7 GLY A 101 CYS A 113 1 13 HELIX 8 8 ASP A 121 GLY A 134 1 14 HELIX 9 9 GLN A 139 GLY A 158 1 20 HELIX 10 10 ASP A 172 ALA A 182 1 11 HELIX 11 11 PRO A 188 ARG A 195 1 8 HELIX 12 12 ARG A 195 GLY A 211 1 17 HELIX 13 13 PRO A 213 GLY A 231 1 19 HELIX 14 14 PRO A 238 PHE A 245 1 8 SSBOND 1 CYS A 36 CYS A 155 1555 1555 2.05 SSBOND 2 CYS A 85 CYS A 113 1555 1555 2.04 SSBOND 3 CYS A 181 CYS A 251 1555 1555 2.04 SITE 1 AC1 11 GLN A 31 SER A 58 TYR A 59 TRP A 69 SITE 2 AC1 11 LYS A 140 PHE A 144 PRO A 170 ASP A 172 SITE 3 AC1 11 ASP A 218 TRP A 222 HOH A 272 SITE 1 AC2 7 CYS A 85 ARG A 86 LEU A 89 LYS A 106 SITE 2 AC2 7 LEU A 110 HOH A 300 HOH A 485 CRYST1 72.220 98.110 36.170 90.00 90.00 90.00 P 21 21 2 4 ORIGX1 1.000000 0.000000 0.000000 0.00000 ORIGX2 0.000000 1.000000 0.000000 0.00000 ORIGX3 0.000000 0.000000 1.000000 0.00000 SCALE1 0.013847 0.000000 0.000000 0.00000 SCALE2 0.000000 0.010193 0.000000 0.00000 SCALE3 0.000000 0.000000 0.027647 0.00000 MASTER 324 0 2 14 0 0 5 6 0 0 0 20 END